Casting-machine.



TNO. 746,237.

v PATENTBD DEC. 8, 1903.

R.BAGGALBY., CASTING MACHINE.

.APPLICATIONIIILED FEB. 12, 1903.

No MODEL.

` WITNESSES we cams Evans cc.. Puowuwo. wAsumaroN'. n c.

No. 746,237. PATENTED DEC. 8,1903.

R.BAGGALEY. y CASTING MACHINE.

v APPLICATION FILED FEB.1Z, 1903. y N0 MODEL. l i 4 SHEETS-SHEETWITNESSES 16 mvsm-on THE Nonms PETERS co, PHoroMTHo. wAsNmmfoN. D. cv

n PATENTED DEC. 8, 1903. R. BAGGALEY. CASTING MACHINE# APPLIOATIONFILEDl PEB. 12, 1903. No MODEL.

4 SHEETS-SHEET 3.

WITNESSIS Tn: :mams vzfzns cu. PuoTauTn-xov, WASHINGTON. n. c.

PATENTED DEC. s, 1903.

'E BAGGALBY. fL'exsTING MACHINE. APPLICATION FILED FEB. l2, 1903.

4 SHEETS-SHEET 4.v

N0 MODEL.

INVENTOR Patented December 8, 1903.

PARENTA OFFICE.

RALPH'BAGGALEY, oE PITTSBUEG, PENNSYLVANIA..

CASTING-MACHINE.

SPECIFICATION forming part of Letters Patent N o. 746,237, datedDecember 8, 1903- Application iiled v February 12, 1903. Serial Nol143,009. (No modem To a/ZZ ,wh/m, it may concern:

Be it known that I, RALPH BAGGALEY, of Pittsburg, Allegheny county,State of Pennsylvania, have invented a new'and useful Casting-Machine,ofwhich the following is a vfull, clear, and exact description,reference omitted. Figs. to 32 show end views and elevations, partly insection, ofpigs cast in my machine.

The operation ofcasting copper pigs as heretofore conducted has beenvery wasteful,

' not only because the apparatus which has been employed causes thespilling of a considerable portion of the metal in pouring it in to themolds, butalso because the pigs are cast with fins which, absorbingoxygen from the air, become very .brittle and'break off in handling andshipping, thus occasioning a very considerable loss.

The object of my invention is to lprovide means whereby the presentylosses resulting from the shipment of copper, whether the saine be inpigs, slabs, or bars, may beclirni-` nated. To accomplish ,this result,I`use, preferably, water-jacketed Vmolds whose molding-cavities aredesigned so that the fins resulting from the casting process areconcentrated at one or two points. Fins when so concentrated may bereadily and completely removed by machinery, so that in shipping it isimpossible .for any portion of and thus lost. y

In the accompanying drawings, 2 represents the frame of the machine, and3 is the mold. The mold is of greater 'height' than width and has hollowwalls 4 for the passage of a stream of water, and with trunnions 5 G,situate, preferably, about the middle of the mold, through which inletand outlet pipes 7 and 8 extend for the introduction of water to -coolthe mold. The arrangement of the water-passages in the mold is novel..The water enters a chamber 4 at one side of the mold, from the top ofwhich it overiiows through a passage 4a into the main water- -passage4.around the mold-cavity. Thence after filling the main cavity it flowsthrough a passage 4b at the top into aside chamber 4c, from which it[lows through the outlet-pipe 8. As the mold is filling the air risesAto the top of the chambers 4, 4', and 4c and is displaced through thepassages 4a and 4b and is caused to go out through the pipe 8. To rotatethe mold on its trunnions, I prefer to employ a pinion 9, which is fixedto one of the 'trunnions and is operated by a rack 10, fixed toandmovable with a cylinder 1l, 'which is'reciprocated on a plunger l2,the latter being hollow and serving for the introduction and dischargeof the water or compressed air by which the cylinder is operated. At thebase -of the mold is a movable plug or end piece 13, which is adapted tobe moved inwardly when the mold is rotated into inverted posi tion bymeans of anecc'entric groove 14, which engages with rollers `15 on theplug.

VThe inner end of the plug is preferably shaped as at 16, so as to forma rosette or plain portion at the end of the pig, and the shape of theplug is such as .toform a pig .with a concave end, although, ifdesired," itl .may be shaped so as to form a pig with a pro.

jection'at the end, the purpose in either case being to afford means bywhich the pig may readily be seized and handled. The upper end of themold has atthe side ofthe moldcavity a trough or basin 17 for receivingany surplus metal which may remain in the pouring-ladle after the mol-dhas been filled, and

extendingA above this basin there are pref,- erably stop-arms 18, thepurpose of which I describe below.

motive power of which may be compresruedy air or water. The plug 19' isVpreferably attached removably to the plunger 20 by a key 22, so that itmay be replaced when detoo sired, and the plugs 13 and 1t) arewatercooled by liexible inlet and outlet pipes 19.

is an arm pivoted toa bracket 2l and extending down into the basin 17,having atits lower end a projection or tongue 23.

25 25 are wheels jmtrnaled in the uprights of the machine-traine andadapted to constitute rests for the trunnions of the ladle, and 25' is aspout which conducts the metal to the cavity of the mold 3.

The parts being in the position shown in Fig. 1, except that the upperplug 1t) is retracted above the mold, and the mold being water cooled bypassage of water through its hollow walls f1, molten metal is chargedinto the ladle 25" from a furnace or converter, in proximity to whichthe casting-machine is set, and the ladle is tilted on the wheels 25, soas to discharge the molten copper into the mold. r1`he ladle has acapacity just a little in excess of the capacity ofthe mold. When thecopper has risen in the mold to the desired height, which may beindicated by a mark in the mold-cavity, the ladle is righted and ismoved on the Wheels so as to bring its pouring-spout over the basin 17,and any surplus metal which may remain in it is then poured into thebasin, from which it is after Ward removed, as explained below. When themold has been filled, the plunger 2O is brought down, and the plug 19enters the still molten copper in the interior of the pig and shapes theend of the pig, which rapidly sets, because of the cooling of the moldand plunger by water. The down pressure on the plunger 2O need besufficient only to shape the end of the pig and is not sultieient toexert undue strain upon the machine or the setting metal of the pig. Theplugl 19 is then retracted and the mold rotated on its axis into theinverted position shown in Fig. 3, and during such rotation theguidinggroove 14 causes the bottom plug 13 to advance and to loosen theingot, which then drops from the end of the mold, the mold-cavity beingHaring in shape to facilitate the discharge. The saine motion ofinverting the mold causes the arm 23, which is upheld by the bracket2li, to loosen the surplus piece of copper in the basin 17, because thepiece of copper is temporarily upheld by the arm until it is loosenedfrom the basin by the rotary motion of the mold. If this piece of coppershould stick to the arm 23, it is disengaged therefrom When it strikesthe arms 18, and when the mold isinverted the loosened piece of copperdrops freely from the basin. lt is then thrown into the mold andincorporated in the next pig in order that no waste shall occur. Afterthe discharge of the pig the mold is immediately righted, and anotherpig can then be cast. The operation is thus very rapid and can becarried on with the labor of only one man.

By reason of the shape of the ends or' the plugs 13 and 19,as indicatedat 16, projecting rosettes 2G are formed at the bases of the concaveportions 27 at the ends of the ingot 28, and on one of theserosettes theweight of theingot maybe stamped. On the other one the name of theperson ior whom the ingot is made may be cast.

lf desired, the end plug 19 may not be used, in which case the upper endof the pig will not be shaped as described above and the sidesupplemental mold or basin will not be used.

In the ligures on the fourth sheet ol the drawings I show pigs which arecast in my mold. Their design is such that they are shapely and easilyhandled and the Weight and name marks are protected from injury. Byreason of being cast in a Watercooled mold, in Which they chill quickly,they are smooth and uniform in appearance, and if they are immediatelydischarged into water from the molds while stili hot the coating ofblack oXid will be removed and they will presenta bright appearance. Allthe fins are purposely concentrated by the design of the pig for readyand complete removal by suitable trimming machinery, and such fins arethen returned to the mold and become incorporated in the next pig thatis cast, thus preventing every item of the waste that now prevails.

In another application, Serial No. 147,984, tiled March 14, 1903, Iclaim a pig-casting machine having a mold normally in upright positionand adapted to be rotated, said mold having at its end a movable plugand means for projecting the plug during the rotation of the mold.

Within the scope of my invention the apparatus may be modified invarious Ways, since What I claim, and desire to secure by LettersPatent, is

l. A copper-pig-casting machine having a normally upright mold ofgreater height than width, pivotally mounted near the middle of itsheight, and having water-cooled hollow walls, said mold beingadapted tobe inverted to discharge the pig, and having means by which it isinverted; substantially as described.

2. Apig-castingInachinehavinganormally upright water-cooled mold, withWater-cooled plugs adapted to shape the ends of the pig; substantiallyas described.

3. A water-cooled mold having its upper end open to receive moltenmetal, and having at the side of the open upper end a basin for surplusmetal, and a metalditting device in the basin for removing thesolidified metal therefrom; substantially as described.

4. A copperpig-casting machine having an oblong water-jacketed mold, anda tapering plug at the end of the mold adapted to form a pig with aconcave end constituting a handheld; substantially as described.

5. A coiiperelfiig-casting machine having an oblong waterjacketed mold,and a tapering IOO TIO

plug at the end of the mold adapted t0 form a pig With a concave endconstitutinga handhold, said plug being movable and watercooled;substantially as described.

6. A pig-casting machine havinga mold and a piston having a Water-cooledplug adapted to enter the upper e'n'd of the mold to shape the upper endof the pig; substantially as described.

7. A Water-cooled mold having at its upper end a basin for the receptionof surplus metal, said mold being adapted to be rotated to discharge thepig, and means for disengaging the metal in the basin when the mold isrotated; substantially as described.

8. A rotatable mold having a Water-jacketing chamber 4 and side passages4', 4, connected with the chamber 4 by passages at the top, said'moldhaving trnnnions and waterpassages extending .therethrough into the sidepassages; substantially as described.

In testimony whereofv I have hereunto set my hand.

RALPH BAGGALEY.

Witnesses:

GEO. B. BLEMING, L. M. REDMAN.

